Joshua 13:10

and all the cities of Sihon king of the Amorites, who reigned in Heshbon up to the border of the {Ammonites};

Numbers 21:24-26

But Israel struck him with [the] edge of [the] sword, and they took possession of his land from Arnon to Jabbok, until the {Ammonites}, because the boundary of the {Ammonites} [was] strong.

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